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Ramil amd carly decided to make more baked goods for the bake sale. They used 1/7 lb less flour to make bread than to make cookies. She used 1/5 lb more to make cookies than to make brownies. If she used 1/2 lb of flour to make the bread, how much flour did she use to make the brownies

User Fram
by
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1 Answer

2 votes

Answer:


(31)/(70)\ lb

Explanation:

Given:

They used 1/2 lb flour to make the bread.

They used 1/7 lb less flour to make bread than to make cookies

So they used flour to make the cookies =
(1)/(2)+(1)/(7)

=
(7+2)/(14)

=
(9)/(14)\ lb

Therefore they used
(9)/(14)\ lb flour to make the cookies.

She used 1/5 lb more to make cookies than to make brownies.

So they used cookies to make the brownies =
(9)/(14)-(1)/(5)

=
(5* 9 - 14)/(70)

=
(45 - 14)/(70)

=
(31)/(70)\ lb

Therefore they used
(31)/(70)\ lb flour to make the brownies.

User McRobert
by
8.0k points
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